A small amount of unplugged string noise can be normal, especially on electric guitar. The important question is whether the buzz is loud, whether it comes through amplification and whether it prevents the note from sustaining.
First separate technique from setup. If only one chord buzzes, technique is likely. If the same fret buzzes on many strings, the guitar may need adjustment.
Buzzing happens when a vibrating string touches a fret or another surface that it should clear. Technique causes many isolated buzzes, while widespread buzzing may point to string height, neck relief or fret condition.
Fretting position
Press just behind the fret wire. The farther back you press, the more force is needed and the more likely the string is to vibrate against the fret.
Pressure
Use enough pressure for clean contact, but do not squeeze excessively. Correct position reduces the required force.
Finger contact
A finger may touch a neighbouring string and create a rattle or partial mute. Use curved fingertips.
Setup issues
Very low action, uneven frets, incorrect neck relief or poor nut slots can cause buzzing even with good technique. These problems may require a technician.
Where the buzz occurs gives a clue
Buzz on one chord or one fingered note often comes from placement or pressure. Buzz across many low frets can indicate too little neck relief, while problems only high on the neck may involve action or uneven frets.
A little acoustic buzz can be acceptable on electric guitar
An unplugged electric guitar may produce a faint mechanical buzz that is not audible through the amplifier. Judge the amplified result as well as the acoustic sound before changing the setup.
Work through the shape
- Test individual notes before full chords.
- Use the minimum pressure that produces a clean sound.
- Listen both unplugged and through your normal signal chain.
- Ask a technician for help if buzzing appears across the neck or after a string-gauge change.
- Play the same note softly and firmly to see whether the buzz changes with attack.
- Move the fingertip closer to the fret wire and retest before adding pressure.
When notes buzz or disappear
You keep pressing harder but the buzz remains
Move closer to the fret wire and check whether another finger is touching the string. Force is not always the missing ingredient.
The guitar buzzes only after changing strings
The new gauge may have changed neck tension or action. The guitar may need a minor setup adjustment.
Every string buzzes after a tuning change
Lower tunings reduce string tension. Heavier strings or a setup adjustment may be needed if the guitar was configured for standard tuning and now feels loose.